arm: dts: Add pinctrl/GPIO/EINT node for mt2701

Add pinctrl and GPIO node to mt2701.dtsi
Signed-off-by: Biao Huang <biao.huang@mediatek.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>

arch/arm/boot/dts/mt2701.dtsi

@@ -15,6 +15,7 @@
 #include <dt-bindings/interrupt-controller/irq.h>
 #include <dt-bindings/interrupt-controller/arm-gic.h>
 #include "skeleton64.dtsi"
+#include "mt2701-pinfunc.h"
 
 / {
 	compatible = "mediatek,mt2701";
@@ -85,6 +86,24 @@ timer {
 			     <GIC_PPI 10 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_HIGH)>;
 	};
 
+	pio: pinctrl@10005000 {
+		compatible = "mediatek,mt2701-pinctrl";
+		reg = <0 0x1000b000 0 0x1000>;
+		mediatek,pctl-regmap = <&syscfg_pctl_a>;
+		pins-are-numbered;
+		gpio-controller;
+		#gpio-cells = <2>;
+		interrupt-controller;
+		#interrupt-cells = <2>;
+		interrupts = <GIC_SPI 113 IRQ_TYPE_LEVEL_HIGH>,
+			     <GIC_SPI 114 IRQ_TYPE_LEVEL_HIGH>;
+	};
+
+	syscfg_pctl_a: syscfg@10005000 {
+		compatible = "mediatek,mt2701-pctl-a-syscfg", "syscon";
+		reg = <0 0x10005000 0 0x1000>;
+	};
+
 	watchdog: watchdog@10007000 {
 		compatible = "mediatek,mt2701-wdt",
 			     "mediatek,mt6589-wdt";